ON THE A-DAVIS-WIELANDT BEREZINNUMBER OF SEMI HILBERT OPERATORS

In [۳], we dened the concept of the A-Davis-Wielandt Berezin number for positive operator A.In this paper, we remind this notion and obtain Some upper and lower bounds for the A-Davis-WielandtBerezin number of bounded linear operator on H(). As result, we determined the exact value of theA-Davis{Wielandt Berezin number of some special type of operator matrices.

کلیدواژه ها:

A- Berezin number ، A-Davis-Wielandt Berezin number ، Davis-Wielandt Berezin number ، Berezin number ، ۲ × ۲ operator matrix.